在这一讲里我们介绍几种常用的中规模集成电路,它们在机电一体化产品中起着重要作用.中规模集成电路包括了数十个小规模集成电路,其典型产品如表1所示.1.计数器计数器是一种具有记忆和计数功能的电子元件,种类很多,广泛地应用在各种机电一体化产品中.计数器由基本计数单元(如触发器)以及 In this talk, we introduce several commonly used mid-scale integrated circuits that play an important role in mechatronic products.Micro-scale integrated circuits include dozens of small scale integrated circuits, and their typical products are shown in Table 1 .1. Counter Counter is a kind of electronic components with memory and counting function, a wide range of widely used in a variety of mechatronic products. The counter by the basic counting unit (such as flip-flops) and